함수 is_palindrome()‎‎

1 개요[ | ]

함수 is_palindrome()‎‎

madam → true
abradacadarba → true
java → false
hello → false

2 C++[ | ]

C++

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#include <bits/stdc++.h>
using namespace std;

bool isPalindrome(string s) {
    string p = s;
    reverse(p.begin(), p.end());
    return p == s;
}

int main() {
    // 1
    cout << isPalindrome("kayak") << endl;
    cout << isPalindrome("madam") << endl;
    cout << isPalindrome("racecar") << endl;
    cout << isPalindrome("abradacadarba") << endl;

    // 0
    cout << isPalindrome("토마토") << endl;
    cout << isPalindrome("java") << endl;
    cout << isPalindrome("hello") << endl;
}

3 Java[ | ]

자바 isPalindrome() 문서를 참고하십시오.

Java

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public class MyClass {
    static boolean isPalindrome(String s) {
        return s.equals(new StringBuilder(s).reverse().toString()); 
    }
    public static void main(String args[]) {
        // true
        System.out.println( isPalindrome("kayak") );
        System.out.println( isPalindrome("madam") );
        System.out.println( isPalindrome("racecar") );
        System.out.println( isPalindrome("abradacadarba") );
        System.out.println( isPalindrome("토마토") );
        // false
        System.out.println( isPalindrome("java") );
        System.out.println( isPalindrome("hello") );
    }
}

4 PHP[ | ]

PHP is_palindrome() 문서를 참고하십시오.

PHP

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function is_palindrome($str) { return $str == strrev($str); }

var_dump( is_palindrome('abradacadarba') );
# bool(true)
var_dump( is_palindrome('hello') );
# bool(false)

PHP

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function strrev8($str){
    preg_match_all('/./us', $str, $ar);
    return join('', array_reverse($ar[0]));
}
function is_palindrome($str) { return $str == strrev8($str); }

# bool(true)
var_dump( is_palindrome('kayak') );
var_dump( is_palindrome('madam') );
var_dump( is_palindrome('racecar') );
var_dump( is_palindrome('abradacadarba') );
var_dump( is_palindrome('토마토') );

# bool(false)
var_dump( is_palindrome('hello') );
var_dump( is_palindrome('coffee') );

5 Python[ | ]

파이썬 is_palindrome() 문서를 참고하십시오.

Python

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def is_palindrome(word):
    return word[::-1]==word

# True
print( is_palindrome("kayak") )
print( is_palindrome("madam") )
print( is_palindrome("racecar") )
print( is_palindrome("abradacadarba") )
print( is_palindrome("토마토") )

# False
print( is_palindrome('hello') )
print( is_palindrome('coffee') )

6 같이 보기[ | ]